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The top documents tagged [atom isotopes isotopes]
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Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 2 The Atom What Is an Atom Made Of? The Nucleus Protons are
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Learning Objectives: a. The model of atomic theory was 1 st proposed by John Dalton in 1803. b. Atoms are composed of protons, neutrons, and electrons
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